Kakurasu Help
Rules / Objectives Summary
 Find all of the Blue squares such that all of the totals match the clues.
 The clues are on the right and across the bottom and are the totals for the respective rows and columns.
 The numbers across the top and on the left are the values for each of the squares.
 E.g. the first square in a row or column is worth 1, the second 2, the third 3, and so on.
 Marking a square in Blue will add that square's value to both the row's total and the column's total.
 BrainBashers Kakurasu have been kindly generated by Otto Janko who runs www.janko.at
See the Basic Ideas or Walkthrough below for extra tips and tricks.

What are the numbers for? The numbers across the top and down the left are the values for each of the squares in the rows and columns.
The numbers down the right and across the bottom are the clues, and equal the row and column totals for the squares marked in Blue.
Move your mouse over the puzzle to see the answer.

Basic Ideas
 The numbers across the top and down the left tell you how much each square is worth. The first square is worth 1, the second is worth 2, etc.
 The numbers down the right and across the bottom are the clues, and these tell you the total sum of the Blue squares in each row and column.
 Remembering the values of each square allows you to see which have to be Blue to make the correct clue total.
 You are shown the current row/column total in brackets (if it's above zero), and you'll see a tick if the current total matches the clue (e.g. 2 + 5 = 7).
 There are two ways of making the Blue squares add to 11 (1 + 2 + 3 + 5 or 2 + 4 + 5).
 You have to make the row and column totals match all of the clues, remembering that when any square is made Blue it affects both a row and a column.
Walkthrough

Step 1 This is the start of the puzzle.
Solve this puzzle for yourself at the same time.



Step 2 Row 5's clue tell us that these two squares can't be Blue (as they are worth 4 and 5 respectively, but the clue is only 3), so we can mark them as White.



Step 3 There is only one way of satisfying the 2 clue in Row 4, so we mark this square in Blue, and all others in Row 4 as White.



Step 4 There is only one way of satisfying the 1 clue in Column 1, so we mark this square in Blue, and all others in Column 1 as White.



Step 5 All of Row 1 must be Blue, as this will then add to 15.



Step 6 These squares must be Blue to satisfy Column 5's clue.



Step 7 There is only one way of completing Column 4's clue of 4, so this square must be Blue, and the other must be White.



Step 8 These squares must be Blue to satisfy Row 2's clue of 10.



Step 9 This square must be Blue to satisfy Column 2's clue of 10, the other square must be White.



Step 10 Row 3's total is already correct so the remaining square is White, and Row 5 needs a Blue square to complete it correctly.



Step 11 The completed puzzle.

